7fee8775a4
Summary: Allow EventLogger to directly log from a JSONWriter. This allows the JSONWriter to be shared by EventLogger and potentially EventListener, which is an important step to integrate EventLogger and EventListener. This patch also rewrites EventLoggerHelpers::LogTableFileCreation(), which uses the new API to generate identical log. Test Plan: Run db_bench in debug mode and make sure the log is correct and no assertions fail. Reviewers: sdong, anthony, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D38709
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#include "db/event_logger_helpers.h"
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namespace rocksdb {
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namespace {
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inline double SafeDivide(double a, double b) { return b == 0.0 ? 0 : a / b; }
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} // namespace
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void EventLoggerHelpers::AppendCurrentTime(JSONWriter* jwriter) {
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*jwriter << "time_micros"
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<< std::chrono::duration_cast<std::chrono::microseconds>(
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std::chrono::system_clock::now().time_since_epoch()).count();
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}
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void EventLoggerHelpers::LogTableFileCreation(
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EventLogger* event_logger, int job_id, uint64_t file_number,
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uint64_t file_size, const TableProperties& table_properties) {
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JSONWriter jwriter;
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AppendCurrentTime(&jwriter);
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jwriter << "job" << job_id
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<< "event" << "table_file_creation"
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<< "file_number" << file_number
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<< "file_size" << file_size;
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// table_properties
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{
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jwriter << "table_properties";
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jwriter.StartObject();
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// basic properties:
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jwriter << "data_size" << table_properties.data_size
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<< "index_size" << table_properties.index_size
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<< "filter_size" << table_properties.filter_size
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<< "raw_key_size" << table_properties.raw_key_size
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<< "raw_average_key_size" << SafeDivide(
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table_properties.raw_key_size,
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table_properties.num_entries)
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<< "raw_value_size" << table_properties.raw_value_size
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<< "raw_average_value_size" << SafeDivide(
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table_properties.raw_value_size, table_properties.num_entries)
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<< "num_data_blocks" << table_properties.num_data_blocks
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<< "num_entries" << table_properties.num_entries
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<< "filter_policy_name" << table_properties.filter_policy_name;
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// user collected properties
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for (const auto& prop : table_properties.user_collected_properties) {
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jwriter << prop.first << prop.second;
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}
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jwriter.EndObject();
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}
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event_logger->Log(jwriter);
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}
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} // namespace rocksdb
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